0. Axel Download Accelerator- Axel tries to accelerate HTTP/FTP downloading process by using multiple connections for one file. It can use multiple mirrors for a download. Axel has no dependencies and is lightweight, so it might be useful as a wget clone on byte-critical systems.

2. Tessa 3D-FDTD- Tessa is a three-dimensional simulation software for optical systems, based on the FDTD method. It is believed to be terribly efficient.
Tessa was developed in the LEOM laboratory, École centrale de Lyon: http://leom.ec-lyon.fr/

3. High Availability in Debian- The project aims at coordinating the different development groups for the Pacemaker/Corosync HA cluster stack, including cluster-glue, libqb, resource and fence agents, crmsh, pcs/pcsd, and drbd.